I have been reading about people using TFR and CSC on conservatory roofs. I personally use just fairy, but would like to try different products.
I was thinking of using carpet cleaning prespray, like the Citrus one from Alltec, has I have some knocking around. These chemicals are designed to take alsorts out of carpets, why not try them on conservory roofs. Saves spending out on TFR or something, if it works.